1 Answer

I believe you are supposed to disconnect the negative on your battery, but only if you have a memory saver plugged into your cigarette lighter as to not lose any vital computer settings. then replace your stereo and plug the negative back on to your battery and remove the memory saver.
I've been researching about replacing the stereo because mine has fallen apart and i've just ordered a new one plus the ipod connecting kit.

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Sounds very strange ... I have the exact same set. Try removing the Bluetooth dongle and re installing it again and see if this helps. Is this a new install? You r ground is good right? to the frame not just a black wire from old stereo you replaced?

My dear friend all the stereos got a two cables to feed the stereo the red put on the ignition wire and the yellow on a direct source to the battery positive lead maybe you don´t put the yellow one correctly.Good luck

Not sure where you are measuring your "good" 12vdc voltage(s) from, as
with newer radios there are actually 2 +12vdc voltages you need to have
otherwise the radio will not power up?

Also - your main car fuse block fuse for the switched ACC may be bad if
you are only hooking up the new radio HOT 12vdc wire to the wrong batt
source. I'm not there to actually see what you are or are not doing
right or wrong.

Are you measuring it at the fused YELLOW wire lead (as in ALWAYS HOT,
or as in connected to BATT 12vdc unswitched power source only), or
measuring it at the fused RED (connect to TURN ON +12vdc ACC only), or
at both ?? VERY IMPORTANT here.

Big difference and here is why - as both of these fused +12vdc sources
have to be connected to the proper voltage source or the radio won't
turn on.

The YELLOW fused batt voltage source is always ON, so it can remember
your radio's settings in the memory, and also allow power to the CD
player part of the radio so so as to be able to accept a CD even with
the Ignition switch to the OFF position.

ALSO - that YELLOW unswitched +12vdc wire lead has a FUSED
noise FILTER suppressor box (BLACK in color), and there is usually a 250V 5A fast blow
fuse inside that marked suppressor box as well. NEVER replace the factory
fuses with a higher value, as this will only cause more circuit damage
if there is a possible short in that circuit leg.

The RED fused batt voltage source is IGNITION switched so when you
leave the radio ON - but turn off the Ignition switch - the power is
cut off to the radio so that the batt doesn't run down. Hope this makes
sense to you. There is usually an in-line 250V 1A fast blow fuse in that marked fuse holder.

Both fuses have to be good!!

There also has to be a GOOD ground return - as in a good solid
connection! Dirty grounds can be a high resistive point, and actually
impede current flow to the point where some electronics will not work
at all. You can still read a static +12vdc batt voltage, but NO current
is going to flow in the circuit. I see it happen all too often esp with
dirty batt connectors in the engine compartment.

Seeings your OLD factory radio was some ~12 years old it probably failed from OLD AGE. Possibly?

If it's a higher wattage unit it may have taken out the 5A fuse in the
YELLOW +12vdc lead. Again from old age - as when the older the unit
gets sometimes it tends to draw more circuit current, as from wear and
tear on the CD player part, esp if you play a lot of music CD's in it.
Same if it's a Cassette/Radio player combo. Then again - it could still
be good, but you are maybe still overlooking a blown fuse like in the
"ALWAYS HOT" YELLOW lead??

Chances of getting a 2nd bad after-market radio are pretty slim odds
wise. Unless maybe that after-market was bought in a USED condition? If
that's the case it too may be bad. You might have bought an AS IS LEMON
in that case.

Depending on where you bought the after-market radio from you might
want to take it back and have them check out the "possibly defective"
radio there at the store. If they can do that there? If it checks out
good at the store - then you are definitely doing something wrong at
home!

If any + or - wiring leads were reversed in doing your DIY upgrade
installation then the 2nd radio is history as well. Very important to
NOT reverse polarities!!

These hookup guidelines and hints should help solve the problem, as I
can't see anything else other then possibly a bad AMP if you had a
really high powered car stereo system. You never said either way??

hello...if you are sure that the red wire is acc it should be connected to the acc connection of the ignitionkey.or maybe the lighter positive...and the other to the battery"always 13.8 v"...then the memory will function properly of the radio and you will not drain your battery...please tell me what happens...good luck ...Ron